Satellite data portals for Arctic monitoring Stein Sandven

Satellite data portals for. Arctic monitoring Stein Sandven Nansen Environmentaland Remote Sensing Center Euro. GOOS Arctic Task Team Workshop 12 - 13 September 2006

Satellite sensors Euro. GOOS Arctic Task Team Workshop 12 - 13 September 2006

Near Real Time (NRT) versus Seasonal and Long-term (SLT) monitoring • NRT: daily updated products, short delivery time, support operational users, assimilation in forecasting models • SLT: weekly - monthly products, accumulation of time series, seasonal and interannual variability, requirements to accuracy rather than short delivery time Euro. GOOS Arctic Task Team Workshop 12 - 13 September 2006

Examples of portals by the Arctic Task Team OSI SAF: http: //saf. met. no/p/quick. html Univ. Bremen: http: //www. seaice. de/ DMI: http: //www. dmi. dk/dmi/index/gronland/iskort. htm DTU/DCRS: http: //www. seaice. dk/ Met. no: http: //polarview. met. no/cgi-bin/highres_arkiv. pl Ifremer: ftp: //ftp. ifremer. fr/ifremer/cersat/products/gridded/psi-drift/ AARI: http: //www. aari. ru/default_en. asp NERSC: http: //hab. nersc. no/, http: //www. nersc. no/Seaice_archive, http: //www. nersc. no/~knutal/Ice. Forecast/ + many other portals providing satellite data and derived products Euro. GOOS Arctic Task Team Workshop 12 - 13 September 2006

Sea ice monitoring from microwave satellites: seasonal variability and trends 100% 90% 80% 70% 60% 50% 40% 30% Arctic ice extent 2005 - 2006 15% water land Ref. O. M. Johannessen, 2004 Euro. GOOS Arctic Task Team Workshop 12 - 13 September 2006

Daily regional ice maps from AMSR-E Arctic: North West passage Smith Sound Greenland Sea Svalbard Antarctic: Peninsula Ross Sea Scotia Sea Other: Baltic Sea Caspian Sea of Okhotskh Polarstern Provided by University of Bremen Euro. GOOS Arctic Task Team Workshop 12 - 13 September 2006 6

ESA rolling archive for ASAR images in the Arctic § § Stripes of ASAR images for 20 - 29 August 2006 by Kiruna ground station Green = Wide Swath Mode (WSM) Red = Image Mode Medium (IMM) Blue = Alternating Polarisation Mode (APM) Euro. GOOS Arctic Task Team Workshop 12 - 13 September 2006

Example: High-resolution wind from SAR NCEP wind field with standard resolution (modelled fields) Increased resolution of wind speed derived from SAR data (observed fields)

Chlorophyll-a concentration from optical images Used to monitor a number of environmental parameters such as Phytoplankton blooms Terrestrial sediments Dissolved organic matter Sea surface temperature Ice edge location Ice flow characteristics Ice leads Icebergs Sea ice snow cover Chlorophyll-a concentrations 10 August, 2006 Courtesy: http: //HAB. nersc. no © ESA. Euro. GOOS Arctic Task Team Workshop 12 - 13 September 2006

Example of dissemination: DTU browser for integrating products Courtesy: L. Toudal, DTU Euro. GOOS Arctic Task Team Workshop 12 - 13 September 2006

Issues for further work ØLong-term satellite programmes ØRetrieval algorithms for geophysical products with focus on higher resolution ØDevelop ice and ocean products for assimilation in models: (e. g. ice concentration, ice drift, ice thickness) ØContinued and enhanced provision of SAR data for iceocean monitoring (ESA rolling archive, SENTINEL and other SAR systems) ØInternational Polar Year 2007 - 2008: intensified field investigation and satellite monitoring Euro. GOOS Arctic Task Team Workshop 12 - 13 September 2006